Question about Philips Magnavox 9P6034C 60" Rear Projection Television

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Picture problem The sound works. The picture goes small & big constantly for the past month.

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Re: picture problem

If you have any of the following problems you may want to check the site for a repair kit. Most of the issue below are fairly common with the older Magnavox projection sets. 


Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!

(Note: The below symptoms typicaly occurs after having the expanding/shrinking screen problem above)

Symptom: No Audio or Video but power light is on

Symptom: Audio works but no Video. Power light still work

Symptom: No Video. Audio is intermittent. Power light still works

Posted on Dec 23, 2008

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Re: picture problem

Philips part# 483520988561 actual part# HCNW136 opto coupler datasheet at can buy many places just enter it on google.
other fixes philips part# 483520987834 actual # MC34065p and philips# 483520987712 actual# SC78104 some change all 3 and never have a problem again.

Posted on Dec 01, 2007

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When you say small do you mean shrunk up top and bottom as well as from side to side. You definitely have a deflection problem either horizontal or vertical.If the picture just shrunk top and bottom you have a vertical deflection problem. Do you have the service manual for your model? If not let me know and I will email you one. Describe the shrinking issue a little more and I should be able to give you some guidance.

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1 Answer

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Can you explain more about what you mean by big then small? When the picture got small do you mean it shrunk down in size leaving a black screen around the perimeter? Or did it bow in from top bottom? If you van acurately describe what it was doing I may be able to point you into the right direction on diagnosing the problem.

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I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions

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